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RHEL 4 / 5 / 6 : dovecot (RHSA-2011:1187)

medium Nessus Plugin ID 55917

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Synopsis

The remote Red Hat host is missing one or more security updates.

Description

Updated dovecot packages that fix one security issue are now available for Red Hat Enterprise Linux 4, 5, and 6.

The Red Hat Security Response Team has rated this update as having moderate security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section.

Dovecot is an IMAP server for Linux, UNIX, and similar operating systems, primarily written with security in mind.

A denial of service flaw was found in the way Dovecot handled NULL characters in certain header names. A mail message with specially crafted headers could cause the Dovecot child process handling the target user's connection to crash, blocking them from downloading the message successfully and possibly leading to the corruption of their mailbox. (CVE-2011-1929)

Users of dovecot are advised to upgrade to these updated packages, which contain a backported patch to resolve this issue. After installing the updated packages, the dovecot service will be restarted automatically.

Solution

Update the affected packages.

See Also

https://access.redhat.com/security/cve/cve-2011-1929

https://access.redhat.com/errata/RHSA-2011:1187

Plugin Details

Severity: Medium

ID: 55917

File Name: redhat-RHSA-2011-1187.nasl

Version: 1.19

Type: local

Agent: unix

Published: 8/20/2011

Updated: 1/14/2021

Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P

Vulnerability Information

CPE: cpe:/o:redhat:enterprise_linux:5, p-cpe:/a:redhat:enterprise_linux:dovecot-debuginfo, p-cpe:/a:redhat:enterprise_linux:dovecot-pgsql, cpe:/o:redhat:enterprise_linux:6, cpe:/o:redhat:enterprise_linux:4, p-cpe:/a:redhat:enterprise_linux:dovecot-mysql, p-cpe:/a:redhat:enterprise_linux:dovecot-pigeonhole, p-cpe:/a:redhat:enterprise_linux:dovecot, p-cpe:/a:redhat:enterprise_linux:dovecot-devel, cpe:/o:redhat:enterprise_linux:6.1

Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/cpu

Exploit Ease: No known exploits are available

Patch Publication Date: 8/18/2011

Vulnerability Publication Date: 5/24/2011

Reference Information

CVE: CVE-2011-1929

BID: 47930

RHSA: 2011:1187